Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756149Ab0GMWc6 (ORCPT ); Tue, 13 Jul 2010 18:32:58 -0400 Received: from hrndva-omtalb.mail.rr.com ([71.74.56.125]:35356 "EHLO hrndva-omtalb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753902Ab0GMWc4 (ORCPT ); Tue, 13 Jul 2010 18:32:56 -0400 X-Authority-Analysis: v=1.1 cv=o8sBXTxWt3Y8I13SYZ0pmcTcOViZ+nX/QX6HkgGmvUU= c=1 sm=0 a=MzoIMbBfYF4A:10 a=hO-oPbc3tlwA:10 a=kj9zAlcOel0A:10 a=Nqdp4+S2FArj7gZzHVn+tA==:17 a=Dl0CFYAjAAAA:8 a=W2dsR15lED0eKjLB0wAA:9 a=I_9Gh8hpR2SQzO9zMqYIxMO9cx8A:4 a=CjuIK1q_8ugA:10 a=HfSKAa7qCvcA:10 a=suZm_t7RJsjZ8FWZ:21 a=KEcPHwYxAfIcpQ6j:21 a=Nqdp4+S2FArj7gZzHVn+tA==:117 X-Cloudmark-Score: 0 X-Originating-IP: 70.120.198.24 Date: Tue, 13 Jul 2010 17:34:50 -0500 From: "Serge E. Hallyn" To: "Eric W. Biederman" , Andrew Morton , Pavel Emelyanov , Oleg Nesterov , linux-kernel@vger.kernel.org, Linux Containers , Sukadev Bhattiprolu Subject: Re: [PATCH] pidns: Fix wait for zombies to be reaped in zap_pid_ns_processes Message-ID: <20100713223450.GA16889@hallyn.com> References: <20100625220713.GA31123@us.ibm.com> <20100709121425.GB18586@hawkmoon.kerlabs.com> <20100709141324.GC18586@hawkmoon.kerlabs.com> <20100711141406.GD18586@hawkmoon.kerlabs.com> <20100713214234.GA21042@hawkmoon.kerlabs.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100713214234.GA21042@hawkmoon.kerlabs.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 952 Lines: 23 Quoting Louis Rilling (Louis.Rilling@kerlabs.com): > Hi Eric, > > On 12/07/10 11:09 -0700, Eric W. Biederman wrote: > This patch looks like it is working (only a small RCU issue shown below). I > couldn't try it yet though. > > I must admit that I am using a similar back-off solution in Kerrighed (not to > solve the issue of proc_flush_task(), but for one of the reasons that you stated > above: we want to be sure that all tasks of the namespace have been reaped), but > I considered it too ugly to propose it for Linux ;) > > That said, this is probably the least intrusive solution we have seen yet. Yeah I haven't had a chance to look at it in detail, but this looks right. Thanks, Eric. -serge -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/